How To Fix SDBALM088 - Hit rate of the catalog cache in %

SDBALM088 - Overview

• Message type: E = Error

• Message class: SDBALM - SAP DB and liveCache Alert Monitoring

• Message number: 088

• Message text: Hit rate of the catalog cache in %

Description
The system calculates and displays the hitrate since the last run of
the data collector. In the case of the first run of the data collector
after a restart of the instance or after the Alert Monitor is started,
the system does not display a hitrate.
Data Collector
<ZH>Collector B</>
(RZ20 -> SAP CCMS Technical Experts Monitors -> All Monitoring Contexts
,,-> <Name of the database connection> -> Collectors and Internals
-> Collectors -> Collector B)

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Preset runtime interval of Collector B: 15 minutes

Error message extract from SAP system. Copyright SAP SE.

SDBALM088 - Details

• The SAP error message SDBALM088 indicates that the hit rate of the catalog cache is below a certain threshold, which can lead to performance issues in the database. This message is part of the database performance monitoring in SAP systems, particularly in relation to the database's ability to efficiently retrieve data.
  
  Cause:
  The catalog cache is used to store metadata about database objects (like tables, indexes, etc.) to speed up access to this information. A low hit rate in the catalog cache can be caused by several factors, including:
  
  High Volume of Metadata Requests: If there are many requests for metadata that are not being cached effectively, the hit rate will drop.
  Insufficient Cache Size: The cache may not be large enough to hold all the necessary metadata, leading to frequent cache misses.
  Frequent Changes to Database Objects: If database objects are frequently created, altered, or dropped, this can invalidate cached entries and lead to